jHears: for audio fingerprinting (which also relies on SoX). Both client and server software are required.

It is used to check a series of paired Wave files (a Master and Listening copy) against certain criteria:
# That for each Master there is a corresponding listening copy.# That each Wave file has the correct sample rate and sample bit-rate.# Optionally, that each Listening copy has a sufficiently similar audio fingerprint to that of the Master.